8T49N240-984NLGI8

Overview

The Renesas 8T49N240-984NLGI8 is a FemtoClock NG ultra-performance jitter attenuator and clock synthesizer. It operates within a supply voltage range of 2.375 V to 3.465 V and supports output frequencies up to 867 MHz with input frequencies up to 875 MHz. The device features four differential outputs and is housed in a 40-pin VFQFN package. Designed for high-speed digital systems, it provides precise clock generation and jitter cleaning capabilities across an operating temperature range of -40°C to +85°C.

Feature Summary

• Ultra-low jitter attenuation performance suitable for high-speed serial links
• Four differential output channels supporting frequencies up to 867 MHz
• Integrated I2C interface for programmable configuration via external EEPROM
• RoHS compliant construction with moisture sensitivity level 1

Applications

• High-speed data communication interfaces requiring low phase noise
• Server and storage backplane clock distribution
• Networking equipment synchronization
• Test and measurement instrumentation

Procurement Notes

Verify the specific suffix '984' against the official Renesas ordering guide to confirm the pre-programmed frequency settings and EEPROM content. Confirm the package marking and date code align with current production batches. Check for any recent Product Change Notices (PCNs) regarding assembly sites or material changes that may affect qualification.

Selection Notes

Select this component when ultra-low jitter performance is critical for signal integrity in high-speed applications. Ensure the required output frequencies fall within the 867 MHz maximum limit. Verify that the system design can accommodate the 2.375 V to 3.465 V supply voltage range and the thermal requirements of the 40-pin VFQFN package.

Part Context

This part belongs to the Renesas FemtoClock NG family, which specializes in precision clock generation and jitter reduction. The 8T49N240 series is designed to replace discrete clock solutions, offering integrated PLLs and voltage-controlled oscillators in a compact form factor. It is commonly used in applications where timing accuracy directly impacts system performance.

Replacement Considerations

Direct pin-to-pin replacements within the same family include the 8T49N240-027NLGI8. For upgraded performance, consider the 8T49N241 series. Always verify electrical parameters and programming compatibility before substituting.